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CN-121996593-A - Dual-Type-C interface circuit and display device

CN121996593ACN 121996593 ACN121996593 ACN 121996593ACN-121996593-A

Abstract

The invention describes a double Type-C interface circuit and display equipment, wherein the double Type-C interface circuit comprises a double Type-C interface module, a double Type-C interface signal switching module, a DP screen throwing module, a charging management module, a detection and equipment identification module, an equipment access detection module, a double interface interlocking control module and a main control module, wherein the input end of the double Type-C interface module is used for connecting external equipment, and the output end of the double Type-C interface module is respectively connected with one end of the double Type-C interface signal switching module, the charging management module, the detection and equipment identification module and one end of the equipment access detection module, and the double Type-C interface module is also interconnected with the double interface interlocking control module. According to the invention, the display device with the dual Type-C interface, which is complementary in function, resource multiplexing and safety interlocking, can be provided.

Inventors

  • XIANG QI
  • LU YI

Assignees

  • 深圳市阿卓帕科技股份有限公司

Dates

Publication Date
20260508
Application Date
20260228

Claims (10)

  1. 1. The utility model provides a two Type-C interface circuit, its characterized in that, throw screen module, charge management module, detection and equipment identification module, equipment access detection module, two interface interlock control module and main control module including two Type-C interface module, two Type-C interface signal switching module, DP, the input of two Type-C interface module is used for connecting external equipment, the output of two Type-C interface module respectively with two Type-C interface signal switching module charge management module the detection and equipment identification module with equipment access detection module's input is connected, two Type-C interface module still with two interface interlock control module interconnect, main control module's input respectively with DP throw screen module charge management module the detection and equipment identification module with equipment access detection module's output is connected, the output of two Type-C interface signal switching module with DP throw screen module's input is connected.
  2. 2. The dual Type-C interface circuit of claim 1, further comprising a signal preprocessing module disposed between the dual Type-C interface module and the dual Type-C interface signal switching module.
  3. 3. The dual Type-C interface circuit of claim 1, further comprising a power protection module disposed between the dual Type-C interface module and the charge management module.
  4. 4. The dual Type-C interface circuit of claim 1, wherein the dual Type-C interface module comprises a P0 Type-C interface sub-module and a P1 Type-C interface sub-module arranged in parallel.
  5. 5. The dual Type-C interface circuit of claim 1, wherein the detection and device identification module comprises a P0 detection and device identification sub-module and a P1 detection and device identification sub-module.
  6. 6. The dual Type-C interface circuit of claim 1, wherein the signal preprocessing module comprises a P0 signal preprocessing sub-module and a P1 signal preprocessing sub-module arranged in parallel.
  7. 7. The dual Type-C interface circuit of claim 1, further comprising a P0 power output module disposed between the P0 Type-C interface and the main control module, and a P1 power output module disposed between the P1 Type-C interface and the main control module.
  8. 8. The dual Type-C interface circuit of claim 1, wherein the device access detection module comprises a P0 device access detection sub-module and a P1 device access detection sub-module arranged in parallel.
  9. 9. The dual Type-C interface circuit of claim 1, wherein the power protection module comprises a P0 power protection sub-module and a P1 power protection sub-module arranged in parallel, the P0 power protection sub-module comprising a power switch chip and a voltage divider circuit connected to an overvoltage detection terminal of the power switch chip.
  10. 10. A display device comprising the dual Type-C interface circuit of any one of claims 1-9.

Description

Dual-Type-C interface circuit and display device Technical Field The invention relates to the technical field of electronic equipment, in particular to a dual Type-C interface circuit and display equipment. Background With the development of multifunction of consumer electronic devices, the Type-C interface has become a mainstream interface of devices such as tablet, notebook, portable display, etc. by virtue of advantages of compatibility of forward and backward plugging, high-speed data transmission, flexible power supply, screen projection expansion, etc. In order to meet the requirements of simultaneous connection and parallel function use of multiple devices, the dual Type-C interface device is gradually popularized, and the application scene of the dual Type-C interface device covers complex scenes such as dual-device data mutual transmission, charging and screen throwing, multi-peripheral expansion and the like. The circuit design of the existing dual Type-C interface device mostly adopts an architecture of independent channel and simple switching, namely, two Type-C interfaces are respectively provided with independent signal processing, power management and device identification modules, basic function switching is realized through main control software logic, and a part of schemes also can introduce a simple signal multiplexing circuit to save hardware resources. However, the prior art has many problems to be solved, including firstly, insufficient functional compatibility, incapability of supporting fast charging, high-speed data transmission and DP screen-throwing functions at the same time by a plurality of double Type-C interfaces, a phenomenon of 'functional mutual exclusion', for example, when one interface is used for charging, the screen-throwing function of the other interface is limited, secondly, the resource utilization rate is low, the high-speed signal channel and the power management resource of the main control chip are repeatedly occupied due to the design of an independent channel, the hardware cost is high, the layout space of a main board is tension, thirdly, the potential safety hazard is prominent, when the double interfaces are simultaneously connected with power supply equipment, the problems of power supply conflict, voltage spike and the like are easily caused, and fourthly, the internal circuits of the equipment are possibly damaged due to the lack of a hardware-level interlocking mechanism, the signal stability is poor, high-speed signals (such as USB 3.2 data and DP screen-throwing video signals) are easily interfered in the switching and multiplexing processes, signal reflection, distortion and the like are caused, and the data transmission rate and the screen-throwing image quality are influenced. Disclosure of Invention In order to solve the technical problems that the existing dual Type-C interface circuit system and equipment thereof cannot realize 'functional complementation, resource multiplexing and safety interlocking', the dual Type-C interface circuit is provided. The invention provides a dual Type-C interface circuit, which comprises a dual Type-C interface module, a dual Type-C interface signal switching module, a DP screen throwing module, a charging management module, a detection and equipment identification module, a device access detection module, a dual interface interlocking control module and a main control module, wherein the input end of the dual Type-C interface module is used for connecting external devices, the output end of the dual Type-C interface module is respectively connected with the input ends of the dual Type-C interface signal switching module, the charging management module, the detection and equipment identification module and the device access detection module, the dual Type-C interface module is also connected with the dual interface interlocking control module, the input end of the main control module is respectively connected with the DP screen throwing module, the charging management module, the detection and equipment identification module and the output end of the device access detection module, and the output end of the dual Type-C interface signal switching module is connected with the input end of the DP screen throwing module. Under the condition, the screen throwing function of the display device can be realized through the DP screen throwing module, the mutual exclusion work of the two Type-C interfaces can be realized through the double-interface interlocking control module, the conflict of power supply or signals when the two Type-C interfaces are simultaneously connected with the device is avoided, whether the device is connected with the device or not can be identified through the device connection detection module, and the Type of the connected device can be identified through detection and the device identification module. In addition, in the dual Type-C interface circuit according to the first aspect of the pres